Apple MainStage 3 Instruments - MainStage 3 Instruments
Apple MainStage 3 Instruments - MainStage 3 Instruments
Apple MainStage 3 Instruments - MainStage 3 Instruments
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Retro Synth envelopes<br />
Retro Synth features two identical attack, decay, sustain, and release (ADSR) envelopes that shape<br />
the filter cutoff and the level of the sound over time.<br />
When you think of different sounds, such as a snare drum, piano, or strings, they’re not only<br />
tonally different, but the characteristics of the sound change over time. Both the snare drum and<br />
piano are heard immediately when struck. This is because they both have a short attack phase.<br />
Bowed strings, on the other hand, slowly ramp up in level—they have a long attack time, in<br />
other words.<br />
If you break down any sound over time, you can emulate snare drum-like, piano-like, or stringlike<br />
characteristics easily with Retro Synth’s envelopes.<br />
Attack handle<br />
Vel(ocity) slider<br />
Release handle<br />
Decay/Sustain handle<br />
Envelope parameters<br />
••<br />
Attack handle: Drag horizontally to set the time it takes for the envelope to reach the<br />
initial level.<br />
••<br />
Decay/Sustain handle: Drag horizontally to set the time it takes for the envelope to fall to the<br />
sustain level, following the initial attack time.<br />
Drag vertically to set the sustain level, which is held until the key is released.<br />
••<br />
Release handle: Drag horizontally to set the time it takes the envelope to fall from the sustain<br />
level to a level of zero.<br />
••<br />
Vel(ocity) slider: Drag to determine how sensitive the envelope is to incoming velocity.<br />
••<br />
If set to maximum, the envelope outputs its maximum level only when the keys are struck at<br />
maximum velocity.<br />
••<br />
Softer velocities result in a corresponding change to the levels of each envelope—with a<br />
50% velocity resulting in half-levels for the attack and sustain level parameters. Envelope<br />
attack, decay, and release times are not affected by velocity modulation.<br />
Chapter 12 Retro Synth 235